Showing results for: PAH analysis Articles
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A study of polycyclic aromatic hydrocarbons in airborne particulate matter in central Taiwan
Two sampling sites in central Taiwan, at Hungkuang University (HKU) and Tunghai University (THU), were chosen to contrast the content of polycyclic aromatic hydrocarbons (PAHs) in the atmosphere from November 2000 to April 2001. PAHs that arise from incomplete combustion of organic materials, especially fossil fuels, are the major toxic pollutants in central Taiwan. This study aimed to analyse ...
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Extraction & Analysis of PAHs in Olive Oil Using SupelMIP SPE – PAHs and GC-MS
Polyaromatic hydrocarbons (PAHs) consist of fused aromatic rings and are formed as a by-product during the combustion of fuels. Seven PAHs in particular are known for their carcinogenic properties: benz[a]anthracene, benzo[a]pyrene, benzo[b]fluoranthene, benzo[k]fluoranthene, chrysene, dibenz[a,h]anthracene, and indeno[1,2,3-cd]pyrene. As such, they are monitored in both the environment and food ...
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PAH contents in road dust on principal roads collected nationwide in Japan and their influential factors
Fifty-four road dust samples were collected from principal roads (n = 37) and residential roads (n = 17) nationwide in Japan from March 2010 to November 2012. Sixteen polycyclic aromatic hydrocarbons (PAHs) and ignition loss (IL) were determined. The total PAH contents ranged from 62 to 6,325 ng g−1 with a geometric mean of 484 ng g−1. The IL ranged from 0.8 to 17% with a mean of 6%. The PAH ...
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PAH contents in road dust on principal roads collected nationwide in Japan and their influential factors
Fifty-four road dust samples were collected from principal roads (n = 37) and residential roads (n = 17) nationwide in Japan from March 2010 to November 2012. Sixteen polycyclic aromatic hydrocarbons (PAHs) and ignition loss (IL) were determined. The total PAH contents ranged from 62 to 6,325 ng g−1 with a geometric mean of 484 ng g−1. The IL ranged from 0.8 to 17% with a mean of 6%. The PAH ...
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Predicting toxicity to Hyalella azteca in pyrogenic‐impacted sediments – Do we need to analyze for all 34 PAHs?
PAHs are major drivers of risk at many urban/industrialized sediment sites. The USEPA currently recommends using measurements of 18 parent + 16 groups of alkylated PAHs (PAH‐34) to assess the potential for sediment‐bound PAHs to impact benthic organisms at these sites. ASTM Method D7363‐13 was developed to directly measure low‐level sediment pore water PAH concentrations. These concentrations ...
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Low Level Determination of Polynuclear Aromatic Hydrocarbons in Environmental Samples, Using GC/MS
Low level analysis of PAHs is required to attain various clean-up limits for environmental regulations. The ability to maximize GC/MS instrument conditions to meet lower reporting levels results in a more efficient and reliable determination of these analytes. The following analysis provides the necessary sensitivity and selectivity. The procedure requires that the parameters for GC as well as MS ...
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Innovations in Site Characterization. Case Study: Hanscom Air Force Base, Operable Unit 1 (Sites 1, 2, and 3)
Executive Summary Field analytical instrumentation and methods were used to support a site characterization study at the Airfield at Hanscom Air Force Base (HAFB) Operable Unit 1. HAFB is located in Middlesex County, Massachusetts, and occupies land in the towns of Bedford, Concord, Lexington, and Lincoln. U.S. Air Force military operations began in 1941 and continued through 1973. With the ...
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Dispersant and salinity effects on weathering and acute toxicity of South Louisiana crude oil
Chemical dispersants are an important technology in the remediation of oil spills in the aquatic environment, facilitating degradation of crude oil and salinity is an important factor in dispersant effectiveness. The aim of the current study was to explore the role of salinity on the degradation chemistry of crude oil polycyclic aromatic hydrocarbons (PAH) and acute toxicity of the water ...
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Trace Analysis of PAHs using EPA methods 3541, 3545 and 8100
The Extraction System B-811 and the Syncore Analyst parallel concentrator from Buchi as well as the Pressurized Solvent Extractor from Applied Separations were evaluated for the pretreatment of samples containing PAHs. Recoveries of extraction and subsequent concentration using acetone-n-hexane (1+1) were 70-95% for 2 ring and 90-100% for less volatile 3-5 ring PAHs. A good precision (95% ...
By BUCHI
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Rapid HPLC Analysis of PAH Compounds, Using Porous 3µm Particles
Polynuclear aromatic hydrocarbons (PAHs) are a severe environmental hazard with a variety of sources. Airborne particles, combustion products, and fossil fuels all contain these toxic aromatic substances. Analysis by gas chromatography (GC) has been problematic because GC phases do not meet the need for shape selectivity in separating PAHs. Conversely, high-density C18 octadecylsilane (ODS) ...
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PAH analysis and forensic mapping in sediments on Grand Calumet River - Case Study
Sitelab Corporation was hired by an environmental contractor to analyze 100 sediment samples collected from a post-dredge area covering a 1 mile stretch of river in Hammond, Indiana. The data was used to determine which of the 25 sample locations would require further ...
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Chromatotec Sponsor of the 2015 International Symposium on Polycyclic Aromatic Compounds (ISPAC)
PAH monitoring being at the core of Chromatotec’s 2015 R&D strategy, it was an evidence for the group to sponsor the annual edition of ISPAC, which took place in Bordeaux from 13 to 17 September. This international conference brought together researchers worldwide and focused on the research of Polycyclic Aromatic Compounds (PACs) on multiple fronts of analytical measurements, ...
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Profile: Some Factors Affecting SPME Analysis and PAHs in Philadelphia`s Urban Waterways
The main points covered in the paper are (1) to clarify some important aspects of the analytical method with solid phase micro extraction (SPME) and (2) to demonstrate a way of studying persistent organic pollutants in aquatic environment. These points are particularly interesting because the development of environmental science largely depends on the development of suitable analytical methods ...
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GC-MS/MS analysis of PAH and PCB in environmental samples
The polychlorinated biphenyls (PCB) and polyaromatic hydrocarbons (PAH) are among the most commonly analysed compound classes in environmental analysis. This article demonstrates how hydrogen carrier gas can be used in place of helium for GC-MS/MS analysis of these compounds. Analysis of polyaromatic hydrocarbons (PAH) is typically conducted using HPLC with UV- and fluorescence detection. ...
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Oil pollution in the Caspian Sea coastal waters
The study aims to investigate hydrocarbon and pollutant concentrations in the southern coastal waters of the Caspian Sea to trace their origins and nature, including the effect of the beach materials on hydrocarbons for 11 sites in Golestan, Mazandaran, and Guilan provinces. Samples were collected from sandy and rocky sites for gas chromatography in five carbon ranges of gasoline, diesel oil, ...
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Improved recoveries and lower background for the analysis of PAHs in Olive Oil
Using Supelclean EZ-POP NP and an SLB-5ms GC Column A recent survey implemented by Supelco revealed that 58% of analytical chemists in the food industry find the analysis of compounds in fatty matrices to be highly problematic. Lipid interferences can produce elevated detection limits, contamination of LC and GC systems, and ultimately decrease instrument and column lifetime. Current extraction ...
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Bridging environmental mixtures and toxic effects
The Biological Response Indicator Devices Gauging Environmental Stressors (BRIDGES) is a bioanalytical tool that combines passive sampling with the embryonic zebrafish developmental toxicity bioassay to provide a quantitative measure of the toxicity of bioavailable complex mixtures. Passive sampling devices (PSDs), which sequester and concentrate bioavailable organic contaminants from the ...
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Surface Decontamination of Motor Oil by DeconGel 1101 and 1102
Abstract Surface decontamination efficacy determination of DeconGel™ 1101 and 1102 on aluminum, stainless steel, and concrete surfaces contaminated with Motor Oil (polyaromatic hydrocarbons fraction) was performed with LC/MS (Liquid Chromatography/Mass Spectrometry) according to Environmental Protection Agency (EPA) SW-846 Methods: 3500C (sampling), 8321B (analysis), and 1654A (Analysis of ...
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Surface Decontamination of Crude Oil by DeconGel 1101 and 1102
ABSTRACT Surface decontamination efficacy determination of DeconGelTM 1101 and 1102 on aluminum, stainless steel, and concrete surfaces contaminated with Crude Oil (polyaromatic hydrocarbons fraction) was performed with LC/MS (Liquid Chromatography/Mass Spectrometry) according to Environmental Protection Agency (EPA) SW-846 Methods: 3500C (sampling), 8321B (analysis), and 1654A (Analysis of PAH ...
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A comparison of two solid phase extraction methods for the analysis of Polyaromatic Hydrocarbons in butter
Background Polyaromatic hydrocarbons (PAHs) are ubiquitous in the environment, resulting from both natural and manmade sources of combustion. Farm animals, such as cows, can become exposed to them through both consumption of contaminated feed and water, and inhalation of contaminated atmosphere1. Consequently, these compounds can be present in dairy products produced from cow’s milk such ...
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